Русско-англо-русский юридический словарь

intern – to work for a company or organization for a short time, sometimes without being paid, in order to get experience of a particular type of work: He's interning for nine months at the Environmental Education Center in the Cuyahoga Valley National Park. (Cambridge Business English Dictionary)

‘Unlike in the English system, where I would have been required to undergo a traineeship, I was treated as a fully qualified associate from day one and given substantial autonomy,’ he says. (The Law Society Gazette)